All Questions
5
questions
1
vote
1
answer
247
views
Confusion over Microfacet-based BRDFs and Normal Distribution Functions
Through reading various sources online, I've become a bit confused. I'll briefly outline what I think I do understand:
My understanding is that microfacet-based BRDFs assume there is always a perfect ...
- 229
1
vote
1
answer
202
views
Specular reflection with different viewing direction where reflection direction and viewing direction coincide
Suppose $P_1$ and $P_2$ two different points on surface. And let
$l$: be the light source direction,
$n$: normal vector
$r$: specular reflection direction
$v$: viewing direction .
In case 1 (at $P_1$...
- 211
4
votes
1
answer
116
views
Data fitting SVBRDF with L-M
I am reading two shot svbrdf capture . I want to understand the data fitting.
For example, I have my input image 3000x2000 pixels, and I divide it to create my source tiles of 192x192 pixels. The way ...
- 149
23
votes
2
answers
8k
views
How to properly combine the diffuse and specular terms?
As far as I understand, in a BRDF the Fresnel term is telling us the probability for a photon to be reflected or refracted when it hits a surface.
The reflected photons will contribute to the ...
- 4,420
5
votes
1
answer
425
views
Should not specular reflection on a rough surface be similar to diffuse reflection?
Different BRDFs are usually used to compute diffuse and specular reflection.
Some of the most often used include for example the Lambert BRDF for diffuse reflection and the Cook-Torrance BRDF for ...
- 1,861